Solitary, on soil under Coprosma kanuka broad-leaved forest. Trotter’s Gorge, North Otago, 15 i 1966, legit M. Taylor, Taylor 246.

Pileus 25 mm. conical to plano-convex with a slight central umbo, white with yellowish disc, very thin especially towards margin, radially grooved near margin and finally split to show gills. Stipe 7 mm long fawn with dull white, waxy tomentum at base, very fragile. Gills adnexed, yellowish becoming tawny brown. Flesh thin, whitish. Basidiospores 13-15.5 x 7-9.5 µm ellipsoid, thick-walled, smooth, strongly pigmented; germ-pore distinct. Basidia 4- to 5-spored, clavate-pedicellate, 22-24 x 11-12 µm, hyaline. Cheilocystidia utriform to ventricose or simply vesiculose, 18.5-36 x 10.5-15.5 µm; pleurocystidia absent, one broadly lageniform cystidium seen near to gill-margin.

This is a most unusual agaric as several 5-spored basidia were located in the hymenium. One of us (RW) has examined literally thousands of basidiomata of members of the Bolbitiaceae without observing this phenomenon before. It would be exciting to refind this fungus and see if this character is constant.